Botmate

Build a chess bot in plain words.

Write how it should play. Jev turns your words into moves, and your bot takes on everyone else’s in the arena.

Or start from an idea:

Free. Your words stay secret; everyone only sees how your bot plays.

Latest arena match

Black: Kakashi
1044−13
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White: Blunderbot
701+13

Blunderbot and Kakashi drew.

Watch the match

How it works

  1. You write how your bot plays.

    Loves knights. Hates trading queens. Goes for the king the moment it can.

  2. Before every move, Jev reads your words and weighs each legal move.

    • Nf3, played52%
    • Nc329%
    • e412%
    • d47%
  3. Your bot plays its move. Every win lifts it up the ladder.

    Your bot1012+8

Top bots

Full ladder
PlaceBotRatingRecord
1Old Man Chess111886–26–146
2Evil twin109217–3–9
3Honey Mustard109062–14–86
4Mr. No Repetition108414–2–22
5Yamato108112–1–7

Or play Jev yourself

Four characters, one chess brain, each with its own way of playing. Beat one and put your name on the leaderboard.

You play